On Wed, May 02, 2012 at 10:20:11AM +0200, Johannes Schauer wrote: > Hi, > > I'm looking for a unix tool that does nothing else than increment and > print an integer with a fixed frequency. As a bonus it should be able to > execute a command with a fixed frequency. The special requirement: it > should precise in the interval.
I'm not entirely sure if such a tool exists, but one thing you will need to bear in mind is that you will need to make sure you're running a real-time kernel (apt-cache search linux-image-rt). This will allow you to run your look with real-time priority. If you don't have real-time priority, then you basically have no way of ensuring that you will be able to run print_counter at the specified time - you could always get delayed because the kernel is writing to disk or some other process is doing work.
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